kidney_upper_slim part of part of kidney blood vessel cell kidney venous blood vessel cell KUPO:0001031 Any kidney blood vessel cell that is part of some renal vein. Kidney venous blood vessel cells, also known as renal venous endothelial cells, are integral to the kidney's vascular system. They play a critical role in constructing and maintaining the renal venous system, impacting the body's blood pressure, filtration, and waste elimination. Positioned in the lining of venous blood vessels in the kidneys, they share characteristics with other vascular endothelial cells. Their primary function is to facilitate the transport of deoxygenated blood from the kidneys back to the heart. After the kidneys filter toxins and eliminate waste as urine, these cells are crucial in returning purified, deoxygenated blood for reoxygenation. They also contribute to controlling fluid and solute exchange between blood and kidney tissues, with the permeability of the vascular endothelium, regulated by these cells, playing a key role. Beyond being a biological conduit, renal venous endothelial cells interact with surrounding cells, tissues, and serum components, serving a vital role in cellular crosstalk and immune response. Recent studies highlight their active involvement in kidney-related diseases like renal fibrosis and inflammation, making them important therapeutic targets. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) https://cellxgene.cziscience.com/cellguide/CL_1000893 renal vein